Kubernetes on dedicated server + vrack + public ip's

so i have a vrack with some dedicated servers i also have a few ip blocks.
im using metallb to connect k8s with the local network i use internaly.
but im struggeling to get a Public ip connected to k8s.
i tryed out metallb
i tryed out External ip and configure the ip on the k8s boxes.
but both approaches have failed.

i hope someone has an idea how i would take this any further.

Kind regards